Capacitive Touch Key Pad 12 keys with I2C MPR121

SKU: 50-011


LOCAL PICKUP @ OUR SHOP! Within Davao City.

P 190 FLAT-RATE DELIVERY! For orders less than 2kg, anywhere in the Philippines. For orders more than 2kg, delivery charges may vary.

  • Description
  • Reviews (0)


The MPR121 capacitive keypad uses the MPR121 and 12 touch sensitive pads to give you a simple ‘keypad’ with an I2C output. The board also has four mounting holes allowing it to be used as an input system in place of traditional buttons.

The keypad has 5 lines that need to be connected to your microcontroller, including the power lines, the IRQ line and the I2C lines.


MPR121 Keypad → Arduino Uno

  • 3.3V → 3.3V
  • SCL → A5
  • SDA → A4
  • GND → GND
  • IRQ → D2

Check out the Fritzing diagram below to verify your connections.

MPR121 Keypad Hookup

This diagram shows the bottom side of the keypad, in order to show you the location of the I2C address jumper. In this diagram, the jumper is set to 0, but if you need to have 2 keypads on the same I2C bus, you can change one of them to be set to 1.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.